baber/WOPTO huggingface dataset:
Patent DE-4220412-A1 (DE)
Title: Cleavage of polycarbonate(s) to give bisphenol(s) and di:aryl carbonate(s) - by catalytic transesterification with phenol(s), isolation of bisphenol, flash distn. of residue and fractionation of distillate
Inventor: BUYSCH HANS-JOSEF DIPL CHEM DR
IPC: C07C68/06
Filed: 1992-06-22
Abstract: A process for cleaving polycarbonates (PC) into bisphenols (II) and diaryl carbonates (III) comprises transesterification with phenols (IV) in the presence of catalysts. (II) are then isolated from the transesterification prod., and the residue is subjected to flash distn. to give (IV) and (III) which are then sepd. Pref., (II) is Bishphenol A, (IV) is phenol and the catalyst is, e.g. NaOH, KOMe, NaOAc, Et3N, Bu2SnO, Ti(OMe), etc.; transesterification is carried out at 150-280 deg C. (II) is sepd. from the prod. by crystallisation, e.g. by cooling or by addn. of solvent such as hexane, toluene, CH2Cl2, etc., and the residue is flash distilled at 0.5-200 mbar, e.g. on a thin-film or falling film evaporator, etc. USE/ADVANTAGE - Useful for recycling scrap PC; the prods. can be used again for the prodn. of PC or for other applications, e.g. for prodn. of epoxy resins (bisphenol component) or as solvents etc. (carbonate component). Simple and economical process for recovering monomers (II) and (III) in high yield, without the large quantities of reagents and large appts. required in prior-art sepn. methods, and without producing large vols. of effluent.
Patent DE-4222162-A1 (DE)
Title: Method for rapid ignition of IC engine exhaust pollutants - involves use of catalytically effective reactor whose through flow cross-section can be varied.
Inventor: NORD KLAUS JUERGEN
IPC: F01N3/20
Filed: 1992-07-06
Abstract: The temp of the exhaust gas in the region of the reactor (4) is measured and the volume of the reactor through which gas flows is regulated dependent upon the exhaust gas temp.It is regulated by adjustment of the cross-section (5.6) of the gas inlet surface of the reactor proportionally to the actual exhaust gas volumes of the internal combustion engine,i.e. increased or reduced. Realising the inherent energy of the exhaust gas a thermic expansion of the gas within the reactor (4) is stopped. The surface regulating system (5, 6) comprises a disc (5) which is arranged pivotably in front of the reactor. USE/ADVANTAGE - To reach the ignition temp. of the harmful content of internal combustion engine exhaust gas with the inner energy of the gas being maintained for the phase of harmful material redn.
Patent DE-4224606-A1 (DE)
Title: Hydraulic servo-valve for control of linear or rotary motors - has oil flows controlled by throttling effect at corners of square section rotor rotated back and forth in square section clearance bore of valve body
Inventor: LINSER JOERG J PROF DIPL ING
IPC: F15B13/04
Filed: 1992-07-25
Abstract: The rotor (2) of the valve is cuboid with bevelled flats (4) on the corners. End covers of the valve body (1) support the rotor about a rotational axis (3) in the square section bore of the body. The rotor fits into the bore with a small clearance. Around the bore are ports (A,B,P,R) for oil flows between the servo-valve and a hydraulic pump, motor and oil sump. If the rotor is turned anti-clockwise the gap is closed at corners (5,6,7,8) whilst the gap at corners (9,10,11,12) is opened. The pressure rise due to throttling in the spaces between corners (5,6,7,8) causes movement of the piston to the right. The reverse movement is produced by clockwise rotation of the rotor. ADVANTAGE - Simple, low-cost design not requiring close manufacturing tolerances.
Patent DE-4226077-A1 (DE)
Title: Electrode material for gas discharge switch - contains insol. non-oxidic emission active component esp. refractory metal carbide
Inventor: HARTMANN WERNER DIPL PHYS DR
IPC: H01T1/24
Filed: 1992-08-06
Abstract: A gas discharge switch electrode material consists of at least two components, of which one is a non-oxidic emission-active component which is insoluble or only partially soluble in the other component(s), so that emission-active centres are present at the surface of the electrode material. Pref. the electrode material contains W and/or Mo and the non-oxidic emission-active component is a metal carbide. USE/ADVANTAGE - For the main electrodes of esp. low pressure gas discharge switches (hollow electrode switches or pseudo-spark switches), but also of other gas discharge switches such as thyratrons.
Patent DE-4228988-A1 (DE)
Title: Lubrication monitor for rotating machine part - has inductive sensor for rotational speed and with program to monitor lubricant thickness
Inventor: HACKEWITZ FRIEDRICH-W VON DR I
IPC: F16N29/04
Filed: 1992-08-31
Abstract: The rotation sensor includes an inductive sensor with a surrounding coil mounted on a fixed support and with its head positioned over a rotating ring (20) with spaced recesses to generate impulse counts to compute rotational speed. The amplitude of the impulses provides a measure of the dielectric effect of any lubricant and hence the level of the lubricant film. The system provides warning of reducing lubricant level before the bearing runs dry. The inductive sensor is mounted inside an insulating sleeve and is spring loaded to locate on a support surface on the rotating section. A lip around the sensor head, with out flow ducts, controls the amount of lubricant film collected during the rotation. USE/ADVANTAGE - For ABS control. Provides low lubricant warning before bearing runs dry and is damaged.
Patent DE-4241920-A1 (DE)
Inventor: LINZENKIRCHNER EDMUND DIPL ING
IPC: G06F7/60
Filed: 1992-12-11
Abstract: In a process for designing a fuzzy regulator with at least one input parameter and at least one output parameter (x1, x2, y), where an incomplete rule base with rules that are defined explicitly is supplemented by an implicit rule whose conditional part yields a truth value that has its greatest value when the explicit rules yield a truth value of 0 and is the smallest when the explicit rules have a truth value of 1, the truth value of the implicit rule may be determined by forming the maximum from the truth values of the explicit rules and calculating the complement to 1. This leads to a great simplification of the design of the regulator and prevents instabilities that can occur with an incomplete rule base.
Patent DE-4243134-A1 (DE)
Title: Damped mounting for throttle valve in IC engine
Inventor: SCHINDLER WOLFGANG
IPC: F02D9/02
Filed: 1992-12-19
Abstract: The throttle setting shaft (8) has a control arm (6) linked to it via a torsion spring (12), with the control arm attached to the throttle pedal linkage. A second arm (17) rigidly mounted on the throttle shaft has one end attached to the telescopic damper (21), with the other end of the damper mounted on the engine (23). The damper mountings are swivel mountings. The effective moment the damper imparts to the damping arm reduces with increasing throttle setting.The angle between the damping arm and the telescopic damper is 90 deg. at idling speed setting and increases to 180 deg. for full throttle, at which point no damping effect is obtained. The coupling between the throttle control arm (6) and the throttle shaft is a simple coil spring (12). A second spring (11) parks the throttle linkage for idling.
Patent DE-4244115-A1 (DE)
Title: Semiconductor device - comprises silicon@ layer, and foreign atom layer contg. boron ions
Inventor: MURAKOSHI ATSUSHI
IPC: H01L21/28
Filed: 1992-12-24
Abstract: Semiconductor device comprises: (a) a Si layer; and (b) a 'foreign' atom layer contg. B ions, where a portion of the B ions is contained in a cluster of icosahedric structure each contg. 12 B atoms. The layer (b) is formed in the layer (a). The device is pref. produced by: (i) forming a foreign atom layer on a Si layer in a concn. such that at least a portion of the B ions is present in the form of clusters of an icosahedric structure each contg. 12 B ions; and (ii) forming a functional section using the foreign atom layer formed. ADVANTAGE - The foreign atom layer has a charge carrier that is formed by a low temp. process.
Patent DE-4300264-A1 (DE)
Title: Energy conversion method using rotary piston aggregate
Inventor: GATHMANN WILHELM
IPC: F01C11/00
Filed: 1993-01-08
Abstract: The air is compressed by a rotary piston compressor (50) and then mixed with fuel in a combustion chamber (34), and ignited. Water is then injected into the combusted gases and vaporised.The gas-steam mixture is expelled into a pressure vessel (45) after the opening of a channel (44). The mixture is supercharged to drive a rotary piston engine (51). The compressor, combustion chamber and rotary engine are all combined in one housing (23), which is surrounded by the pressure vessel.
Patent DE-4300270-A1 (DE)
Title: Sailboard rig for dinghy
Inventor: SCHLIPF HERMANN
IPC: B63B15/00
Filed: 1993-01-08
Abstract: The sailboard rig is fitted to a dinghy in which at least the front section is flush hulled. A track (10) fixed to the foredeck runs to the bags and supports a slider onto which the base of the mast is fitted. The mast is supported by a forestay and port-and starboard stays, all of which are adjustable. The tops of the stays are attached to the mast at the yardarm mounting (6).The guide rail for the mast mounting has ratchet stops to locate the slider in preset positions. The rail and slider can be a retrofit for an existing dinghy. The rail has a length of 0.5 to 1.5 metres, a width of approx. 2 cm and a height of 1 to 5 mm.
Patent DE-4302692-A1 (DE)
Title: Envelope with window
Inventor: JANISCH MANFRED
IPC: B65D27/06
Filed: 1993-02-01
Abstract: The front (11) of the envelope has an open postage window (14), which is separated from the address window (12) by a material strip. The edge of the postage window is reinforced, the reinforcement consisting of a strip of material, which is cut away to form the window, and folded inwards along the window edge.The edge section of the back of the envelope opposite to the flap has at least two cut outs. The free flap edge extends through the cut outs, when the flap is sealed with the back. Due to this, the flap is located partially inside and partially outside the back.
Patent DE-4303896-A1 (DE)
Title: Conveying apparatus for the suspended transport of articles
Inventor: PAULS HELMUT
IPC: B61B10/02
Filed: 1993-02-10
Abstract: A conveying apparatus for the suspended transport of articles comprises an endless main conveyor with a conveying chain which possesses drivers, fastened at intervals thereto, for suspended carriers for the suspension of articles, at least one endless additional conveyor, the conveying chain of which is likewise provided with drivers for suspended carriers, the intervals between which correspond to those of the drivers on the conveying chain of the main conveyor, and at least one pair of transfer devices assigned at a distance one behind the other to the main conveyor and to the additional conveyor and taking the form of a switch, by means of which selectable suspended carriers can be transferred from the main conveyor to the additional conveyor, and vice versa, the conveying chains having chain links connected to one another in an articulated manner by means of transverse bolts. At the same time, at least one of the additional conveyors is connected to the main conveyor in parallel.
Patent DE-4304544-A1 (DE)
Title: Drive device for an electrical power switch (power circuit breaker)
Inventor: TIETZKE JOERG
IPC: H01H3/30
Filed: 1993-02-10
Abstract: In the case of a drive device for an electrical power switch, a force store (14) is provided in order to drive a contact piece of an interrupter unit (12). The force store is articulated on a switching rod (13), via a rotating crank (11). The crank (11) can be coupled to a cocking motor via a shaft (1) which is connected firmly to it, a cocking drive (22), and a freewheel mechanism (21), it being possible to load the force store (14) via said cocking motor. A non-return mechanism (15) is connected to the shaft (1) and brakes the shaft (1), after executing a switching movement, when the crank (11) swings back and the shaft (1), which is connected to it, rotates backwards. At the same time, the freewheel coupling (21) is operated via a brake (16), and the cocking motor is coupled to the shaft (1). This prevents the crank (11) swinging back after the switching movement, so that the dynamic energy of the crank (11) is stored for the next switching process, and the next cocking process is automatically initiated during this process. <IMAGE>
Patent DE-4311773-A1 (DE)
Title: Process for coating surfaces with soot by means of combustion
Inventor: TISCHLER FRIEDRICH
IPC: B22C23/02
Filed: 1993-04-08
Abstract: The invention relates to a process for coating surfaces with soot by means of substoichiometric combustion of fuel gas, in particular of acetylene, which combustion impinges the surface in question, the fuel gas and an oxygen gas being suitably fed to the combustion site via a burner having an associated burner head. The process in question is characterised in that a substantially closed chamber is formed between the surface to be coated with soot and the fuel gas feed or the burner head by means of appropriately arranged shielding surfaces and, for a soot-coating operation in this chamber, a suitable amount of a suitable mixture of fuel gas and oxygen gas (= fuel gas mixture) is introduced and ignited.
Patent DE-4316145-A1 (DE)
Title: Bottle or tube consisting of an elastic material
IPC: B65D47/20
Filed: 1993-05-14
Abstract: A bottle is known of the type in which a number of separate parts are required for the full functionality of the lid part, said known design being relatively complex and expensive to produce. The object of the invention is to design such a bottle in such a way that its closure cap can be produced cost-effectively and permanently meets all the requirements arising during operation. For this purpose, provision is made for the lid part (5) to consist of a material of high elasticity and to be firmly connected to a bearing body (4) which is formed from a material of low elasticity and is otherwise connected to the neck of the bottle (1) or to the closure cap (2). Cost-effective production, as is desired for such mass-produced articles, is possible due to the invention, the lid part operating virtually without wear and thus unrestrictedly maintaining its functionality for the service life of the bottle. <IMAGE>
Patent DE-4322665-A1 (DE)
Title: Cooling appts. for power semiconductor device e.g. in motor vehicle - has coolant passage contg. cooling plates which are alternately stacked with semiconductor elements and form coolant circuit
Inventor: HIGASHI IZUMI
IPC: H05K7/20
Filed: 1993-07-07
Abstract: The cooling device includes coolant passages in which cooling plates (3) are formed, with the plates alternating with individual semiconductor elements (2) to form a stack. The plates form a cooling circuit and are parallel-connected to distribution pipes (12,13) via insulating pipes (14). An electrically insulating, liq. coolant, for convection of heat generated by the semiconductor elements, is force-circulated through a coolant circuit, contg. an external radiator. Fluorocarbons may be used as the liq. coolant. The coolant passages in the plates may contain distributors on the inlet and outlet sides. USE/ADVANTAGE - For vehicle thyristor and diode modules. Compact, lightweight design for high cooling performance.
Patent DE-4334395-A1 (DE)
Title: Cam changeover mechanism for IC engine of motor vehicle - has two cams of different sizes to drive main and auxiliary rocker arms respectively
Inventor: NAKAMURA MAKOTO
IPC: F01L13/00
Filed: 1993-10-08
Abstract: The engine has an inlet valve (9) and an outlet valve. A first cam (21) opens and closes one these valves. A second cam (22), larger than the first, opens and closes the same valve. A main rocker arm shaft is supported on the engine. A main rocker arm (1) is supported on the rocker arm shaft such that it is free to slide. The main rocker arm is driven by the first cam. An auxiliary rocker arm shaft is supported on the main shaft so that it extends in parallel with it. A high pressure working oil is driven via a change-over valve to an oil line under predetermined high r.p.m. working conditions. The operation of the change-over valve is electronically controlled from a control unit. Engine r.p.m., cooling water temp., lubricating oil temp. signals as well as an air excess supply pressure signal from a turbo-charger and an opening signal from a throttle flap are supplied to the control unit for controlling the change-over valve accordingly. USE/ADVANTAGE - Better torque at low or average r.p.m. and better output power at high r.p.m. Requires no precision machined parts.
Patent DE-4400312-A1 (DE)
Title: Meat mincer
IPC: B02C18/30
Filed: 1994-01-07
Abstract: The meat mincer, with a feed screw to move the meat towards a cutter and a perforated plate, has a sleeve fitted to the compound support secured radially and rotationally. It is pressed against the bearing bush of the cutting blade by a sleeve nut, to give a continuous adjustment of the ring gap between the bearing bush and the sleeve, over the whole adjustment range, even during mincing.  The sleeve is held against rotation by a polygon profile at the exterior of the sleeve and the interior of the compound support, with an asymmetrical polygon shape for positioning at only one angular setting. The hose connection is secured to the trailing end of the sleeve by a ring groove and an axial groove, to give an axial and shaped fit, but allowing angular adjustment.
Patent DE-4402896-A1 (DE)
Title: Shuttering which consists of an insulating material and is intended for the production of a concrete floor element, and process for the production thereof
Inventor: VAN RHEE FRANCISCUS WILHELMUS
IPC: E04B5/08
Filed: 1994-02-02
Abstract: The invention relates to a shuttering which consists of an insulating material and is intended for the production of a concrete floor element which is to be cast in the shuttering. The shuttering has the longitudinal ribs of a shaped floor element twice, on the outer sides of the upright side partition walls which bound the floor element and, in the vicinity of their ends, are connected, by connecting spines, to a cross-sectionally more or less upside-down U-shaped intermediate piece which adjoins the connecting spines by means of the ends of its feet. The connecting spines are connected to one another via a panel-like part which forms the underside of the shuttering. Located between the feet of the intermediate piece are reinforcement spines which run more or less parallel to the feet and are fitted between the panel-like part and the intermediate piece laid above the panel-like part. In this arrangement, there are ducts in the shuttering, which ducts are bounded by the upside-down U-shaped intermediate piece, the reinforcement spines and the panel-like part. <IMAGE>
Patent DE-4403102-A1 (DE)
Title: Device for cleaning urinal-bowl siphons with the aid of a unit using water under high pressure
Inventor: WELZEL JOACHIM
IPC: E03D13/00
Filed: 1994-02-02
Abstract: Up until now, the effective cleaning of siphons of urinal bowls has been possible only by means of acids. The devices permit on-site cleaning with the aid of water under high pressure, chemicals being dispensed with. The shapes of the devices permit directed spraying of water under high pressure at inaccessible locations in the urinal bowl, in order to detach impurities in the siphon and flush them out. Cleaning of urinal-bowl siphons.
Patent DE-4412250-A1 (DE)
Inventor: XIE JIAN DR ING
IPC: G01R31/02
Filed: 1994-04-07
Abstract: The invention concerns a device for checking the insulation condition of alternating-current-carrying lines or cables, in particular overhead contact lines for railways, using an interposed electrical test resistance connected in series with the overhead line to limit the current and a voltage transformer connected to the other side of the test resistance to measure the voltage drop. In order to avoid the heating problems and high costs associated with the test resistances used in prior art devices, the invention proposes that an inductance (L1) be used as the current-limiting test resistance and that a compensation choke (L2) be connected, behind the inductance, between the overhead line and earth. In a preferred embodiment, the compensation inductance (L2) is designed to compensate or overcompensate for the line capacitance (C) in accordance with the relationship L2C  </=  1.
Patent DE-4413600-A1 (DE)
Title: Dust removal plant for heavily contaminated environments
Inventor: LAUFENBERG WOLFGANG VON
IPC: F24F3/16
Filed: 1994-04-20
Abstract: The dust removal installation is placed close to the origin of the pollution and consists of a coarse filter with flat baffle plates having sections of 7-10 mm<2> placed across the airflow, a fine filter, a fan and opt. an exhaust silencer. The contaminated air is screened around the suction hood by a portion of the fan output which is used as screening air and is supplied at a point (14) immediately after the fan delivery through pipes (15,16) to the screening air generator (17-20).
Patent DE-4415907-A1 (DE)
Title: Optical sensing to detect foreign particles in fibre stream
Inventor: HERGETH HUBERT A DIPL ING
IPC: D01G31/00
Filed: 1994-05-06
Abstract: A machine for recognising foreign bodies in a fibre stream has colour sensors working against a background on the opposite duct surface which has a similar colour and reflectivity as the fibre tufts in the stream. Pref. a condenser (1) feeds fibres into a chute (2) where a roller (3) compresses the fibres into a layer not more than 12 mm thick which passes a row of colour sensors (4, 5). The sensors provide signals to diverting jets (8) which direct foreign particles into a container (12) while good fibres leave through a suction duct (10). The background surface seen by the sensors can have a surface structure of pyramids, grooves or honeycomb patterns with a maximum height of 8 mm. It can have colour dots up to 1 mm or grains of less than 2 mm and have a reflectivity which differs by less than 25% from that of the fibres. The background duct surface can be a roller or a continuous conveying band.
Patent DE-4420887-A1 (DE)
Title: Wheel speed sensor
Inventor: SUMI TAKASHI
IPC: G01P3/487
Filed: 1994-06-15
Abstract: A wheel speed sensor of simple design outputs a signal, which is used to measure the speed of a wheel, without interference (noise) due to displacement of rotating components. A housing is provided on a support element of a suspension mechanism. The support element carries a bearing which supports a wheel shaft. At least one stationary tooth is constructed in a projecting fashion on an inner surface of the housing. Arranged in the interior of the housing is an annular coil, and a rotatable yoke component is accommodated in the housing and can rotate together with the wheel shaft. The yoke component has a shaft which is inserted into a centre hole of the annular coil and into a component which extends in a radial direction, and extends through the centre hole of the annular coil in such a way that a gap is formed between one end of the shaft and a wall of the housing. At least one rotatable tooth is formed on the outer circumference of the radially extending component, with the result that a second gap is produced between the rotatable tooth and the stationary tooth. A magnet forms part of the shaft. A magnetic flux generated by the magnet forms a loop surrounding the annular coil owing to the fact that it extends through the shaft, the radially extending component, the second gap, the housing and the first gap, with the result that in the annular coil a voltage signal having a periodic variation which [lacuna] a speed of rotation of the wheel ... Original abstract incomplete.